I use mine a LOT. I bought some "highlighter tape" that I can use to mark my cutting lines if I need to bulk-cut a bunch of stuff. I have a few friends I'm teaching quilting to, and this ruler is really popular and helpful for my newbies, too. I help them mark the ruler and then they can do all their cutting without a lot of fuss or mistakes. The tape peels right off when we're done.
I use mine a lot for squaring blocks as well. I square left & right, then turn the block 90 degrees and square top & bottom. Works great!
I also got the "pro" version that can cut 2-1/2" strips from WOF. I use THAT ruler a TON. I like turning my scraps into strips with it - goes very fast and then I have great homemade scrappy "jellyrolls" to play with.
I say definitely worth the price you paid.